Sharpener for razor blades, such as the gillette and other blades having two cutting edges



S PENER FOR RAZOR BLADES S I ND OTHER BLADES HAVING TWO CUTTING HDGBS v.15, 1927 3 Shoots-Sheet 1 Filed No p 1931- E. G. AVIGNON 1,823,926

SHARPENER FOR RAZOR BLADES SUCH As THE GILLETTE AND OTHER BLADES HAVINGTWO CUTTING EDGBS Filed Nov. 15, 1927 3 Sheets-Sheet 2 4 v F1025. 3 7 22D- Sept,"22, 1931. E. s. AVIGNON 'SHARPENER FOR RAZOR BLADES SUGH AS THEGILLETTE AND OTHER BLADES HAVING TWO CUTTING EDGES Filed NOV. 15, 1927 3Sheets-Sheet 3 Patented Sept. 22, 1931 UNETED' STATES PAT-LE err-IceEDOU'ARID GEORGES AVIGNON, .OF -VITRY-SUR-SEINE, FRANCEz- SHARPENER nonRAZOR BLADES, soon AS THE GILLETTE AND ornER BLADES was TWO CUTTINGEDGES Application filed November 15, 1927, Serial No. 233,472, and inFrance It'oveinber I8, 1926. p

The object of the invention is to provide an improved apparatus adaptedto simultaneously sharpen the opposite edges of a Gillette or similarsafety razor blade and which is simple in construction, may be readilyoperated and is adapted to receive and hold not only the blade which isto be sharpened, but also the spindle or handle which carries the blade.

A further object is to provide improved means by which cutting of thestrop by the blade is prevented.

With the above and other objects in view, the invention consists in theconstruction, 15 combination and arrangement of devices hereinafterdescribed and claimed.

In the accompanying drawings Fig. 1 is a vertical section.

Fig. 2 is a view of the whole apparatus.

Fig. 3 shows a side face.

Fig. 4 is the oscillating blade-holder with its two spindle bearingflanges.

Fig. 5 is the blade holder spindle.

Fig. 6 is one of the two rolls provided with small connecting rods.

Figs. 7, 8 and 9 are views of details of the apparatus.

The apparatus comprises a frame 1 having end walls 2, connected togetherby the bars 3 and having bearings for the axles 4, 5, 6 of the variousrolls. 7 is a cylinder roll of large diameter upon which bears theinside abrasive paste face 8 of a leather strop 9. The outer side ofsaid strop is bare and contacts with the opposing sides of the two pairsof smaller rolls 10,12. The ends of the stro are provided with tractiverings or handles to facilitate manipulation of the strop.

By the provision of the two pairs ofrolls 10, 12 which are spaced apartthe contacting portions of the stropare held parallelwith each other andthe portions of the strop which act upon the razor blade being thussupported at the spaced distances are relatively stiffened so that thestrop is applied with maximum efficiency to the work.

Each roll has at each end a crank pin 13 to which is connected one endof a connecting rod 14, the other end of which is connected to a crankpin 15 of a crank 18 or crank 19 with which the blade holder 16" isprovided. The ends of the blade holder are mounted are at the ends ofthe blade holder.

The crank 19 is so shaped that it is possible to'introduce into its slitand into the slit 20 of the blade holder 16 a Gillette or similar razorblade 21, together with its blade holder spindle 22 provided withcatches 23 for the positioning of the blade. 7 I 7 The Walls 2 areconnected above the cylinder roll 7' and bear the vertical fulcrum pin24' of a system of two linked hooks 25 by which the apparatus maybeireadily hung and used.

For sharpeninga blade 25, thesame is positioned; onthe "blade holderspindle 22 so that the catches 23 enter into the openings of the saidblade.- The spindle is introduced into theci'rcular opening 26 of theblade holder, care being taken that the blade 21 comes through the slit20 of the flange 19, then into the. slit of the blade holder 16 to thestrop At this moment, the blade is placed inside the apparatus betweenthewalls 2, but is still not in touch with the leather face 8. Now

it is sufficient to manually pullsuccessi vely oneand the other end ofthe strop 9 to cause the rubbing of its face 11 against the rolls 10:

' Figs. 7 8 and 9 illustrate a device by whichthe blade, which issubmitted to strong pressure, penetrates into the leather, when thelatter is energetically operated. By such device, the edge of the bladeis taken from the strop immediately prior to the end of each strokethereof.

The cranks 18 and 19 of the blade hold I 16 are at their lower sidesprovided with downwardly diverging arms 27 the length of which is suchthat they project beyond the lower ends of the walls one tenth of aninch or thereabout.

i On the leather uncoated side of the strop and somewhat lower than eachone of the handles P used for operating the strop, are

fastened stops which alternately can come in touch with the inside facesof the arms 27, and owing to their wedge shape formcams which .move thesaid arms outwardly, so that the blade is at the same time taken fromthe leather. 7 a

The arms 27 -of the crank -18 can"be connected to the arms 27 of thecrank 19 by the tie"bars'29'to impart a greater cooperation andstiffness tothe said arms, and allow the stops 28 to be. of less widthand-to operate the arms 27 by striking the said tie bars 29intheirmiddle partronly.

'It'willbe apparent that the operation of the apparatus doesnotappreciably heat the abrasive surface of'the strop, the sameremainsia-lways ;tough and dry and also efiicient,fand the blade is notsoiled; and furthermore'owingYtothe-arrangement of thecylinderito'gether with its'various rolls, the tractivestrengthexertedon the strop is reduced to a minimum.

Should strongerpressure in the'contact of the blade 21 with'the strop bewanted, this maybe'provided 'for by supplyingthe rolls 12 with' smallconnecting rods suitably ar ranged, and the action of which comes inadditionito the one of the-other rods 14.

"*Whatl claimds: V a

Razor b'la de sharpening apparatus coniprising aroller-mounted forrotation; a double strop engaging said roller, rolls mounted for'rotation and en gaging opposite sides of the strop, a'blade holdermounted for oscillating movement and having cranks provided with :armswhich diverge in one direction,

. links connecting-the rolls and said 'cranksand serving to oscillatethe -holder at times corresponding to the changes in-thedirection 'of'movement of the strop, and cam acting devices on the stamp arranged "toengage and coact 'w1th thearms of'sa1d cranksto move the blade edgefromthe strop at theend of the movement of the strop-in each direction.

In witness whereof I afliymy signatureh EDOUARD GEORGES A-V'IGNON.

